Question: Which is the sports database that is maintained by the International Olympic Committee?
Paraphrase: Which is the sports database that's kept up by the Universal Olympic Committee?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P126 wd:Q40970 . ?sbj wdt:P31 wd:Q29043181 } 
Answer: Olympic.org athletes database